2665163213 has 4 divisors (see below), whose sum is σ = 2691038688. Its totient is φ = 2639287740.

The previous prime is 2665163209. The next prime is 2665163233. The reversal of 2665163213 is 3123615662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2665163213 - 2² = 2665163209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665163233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12937583 + ... + 12937788.

It is an arithmetic number, because the mean of its divisors is an integer number (672759672).

Almost surely, 2^2665163213 is an apocalyptic number.

It is an amenable number.

2665163213 is a deficient number, since it is larger than the sum of its proper divisors (25875475).

2665163213 is a wasteful number, since it uses less digits than its factorization.

2665163213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25875474.

The product of its digits is 38880, while the sum is 35.

The square root of 2665163213 is about 51625.2187695123. The cubic root of 2665163213 is about 1386.4618905716.

Adding to 2665163213 its reverse (3123615662), we get a palindrome (5788778875).

The spelling of 2665163213 in words is "two billion, six hundred sixty-five million, one hundred sixty-three thousand, two hundred thirteen".